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Ask the local power network operator if you can have it PME'd to begin with. Many are doing so free of charge now.
Just one more time incase you missed it....
Discuss TT system sub main design in the Industrial Electricians' Talk area at ElectriciansForums.net
Ask the local power network operator if you can have it PME'd to begin with. Many are doing so free of charge now.
All this 'do you don't you add an extra rod' is splitting hairs really. Personally i would do it mainly to try and further reduce down the Zdb value in the garage. Also by adding an extra rod you are not relying on connecting the earthing conductor from the house to the shed and using that as a combined earthing and bonding conductor. Bare in mind if you use only the rod from the house supply you would need to run your bonds from the garage back to the M.E.T within the house or ensure your earthing conductor is big enough to use as a combined earthing and bonding conductor.
Thanks, I was feeling a bit bullied there for a moment. It is only a small part of the question, well actually it wasn't any part of the original question, I do like to make it correct though and as the existing rod hasn't got an earth pit I think I will put it in. As far as PFC not being Ra, no it's not but it is quite easy to divide by the voltage which makes the Ra 115 ohms-ie less than 200
know what you mean did however manage to drive a 2.4m rod in at a job in the middle of dartmoor the other day and got Ra of 22 ohmsMust be nice to live somewhere where you can drive a 2.4M rod in without there being a resounding clang as it hits bedrock at 500mm. Trust me to always live at the top of a hill (I have a fear of drowning).
Must be nice to live somewhere where you can drive a 2.4M rod in without there being a resounding clang as it hits bedrock at 500mm. Trust me to always live at the top of a hill (I have a fear of drowning).
Reply to TT system sub main design in the Industrial Electricians' Talk area at ElectriciansForums.net
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